Grant Berent Jacobsen
Grant Berent Jacobsen, Sandringham BE
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20100022724 | Diene Polymerisation - A process for producing homopolymers or copolymers of conjugated dienes comprising contacting monomeric material comprising at least one conjugated diene with a catalyst system comprising two or more different transition metal compounds and optionally one or more activators. Preferred transition metal compounds are based on cobalt and chromium, especially complexes thereof having benzimidazole ligands. | 01-28-2010 |
Grant Berent Jacobsen, New South Wales AU
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20090036621 | Catalyst System - A catalyst system suitable for the polymerisation of olefins, said system comprising (a) a transition metal compound or lanthanide metal compound (b) a cocatalyst and (c) at least one porous support material characterised in that the porous support material has been pretreated with a halogen-containing organometallic compound, in particularly with a fluorine-containing organometallic compound. The catalyst system is particularly suitable for the preparation of polymers having broad molecular weight distributions from the polymerisation of olefins in the presence of a single site catalyst. | 02-05-2009 |
20090233091 | Polymer Films - A method for the preparation of a polymer film containing 300-600 gels/m | 09-17-2009 |
Grant Berent Jacobsen, Tervuren BE
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20080200625 | Polymerisation Catalyst - A polymerisation catalyst comprising (1) a transition metal compound of Formula (A), and optionally (2) an activator, wherein Z is 5-membered heterocyclic containing carbon, nitrogen and at least one other selected from nitrogen, sulphur and oxygen, the remaining atoms in the ring being nitrogen and carbon; M is a metal from Group 3 to 11 or a lanthanide metal; E | 08-21-2008 |
20090124487 | Polyolefins - Process for making copolymer (eg elastomeric copolymer) by copolymerising (1) ethylene with (2) at least one comonomer aliphatic C | 05-14-2009 |
20090131613 | Supported polymerisation catalysts - A method for the preparation of a supported polymerisation catalyst system, comprises: (1) contacting together in a suitable solvent (a) a transition metal polymerisation talyst and (b) a cocatalyst, (2) contacting the mixture from step (1) with a porous support material, and (3) removing the solvent is characterised in that the molar ratio of cocatalyst to transition metal catalyst is <10:1. The preferred polymerisation catalysts are transition metal compounds in particular metallocene complexes. Premixing the catalyst components before addition to the support leads to certain advantages in particular a more facile method of preparation without any loss in activity. | 05-21-2009 |
Grant Berent Jacobsen, Bouc Bel Air FR
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20090043058 | Supported clefin polymerization catalyst - A supported catalyst system comprises (a) a dehydrated support material, (b) a transition metal compound, and (c) an activator and is characterised in that the support material has been pretreated with at least two different organoaluminum compounds prior to content with either or both the transition metal-compound or the activator. The preferr transition metal compound is a metallocene and the supported catalyst systems are suitable for the preparation of polymers having broad molecular weight distributions and improved melt strength. | 02-12-2009 |
Grant Berent Jacobsen, Sandringham AU
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20080293896 | Diene polymerisation - A process and catalyst for producing homopolymers or copolymers of conjugated dienes by polymerising the monomer with a catalyst system comprising (A) a first transition metal compound selected from Cr, Mo and W compounds, and a second transition metal compound selected from Fe Co and Ni compounds (B) a catalyst modifier (eg triphenyl phosphine) and optionally (C) one or more catalyst activators (eg MAO). The cis, trans and 1,2-vinyl microstructure of the produced diene polymer can be controlled. | 11-27-2008 |
Grant Berent Jacobsen, Victoria AU
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20140031504 | CATALYST SYSTEM - A catalyst system suitable for the polymerisation of olefins, said system comprising (a) a transition metal compound or lanthanide metal compound (b) a cocatalyst and (c) at least one porous support material characterised in that the porous support material has been pretreated with a halogen-containing organometallic compound, in particularly with a fluorine-containing organometallic compound. The catalyst system is particularly suitable for the preparation of polymers having broad molecular weight distributions from the polymerisation of olefins in the presence of a single site catalyst. | 01-30-2014 |